Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value of Financial Instruments [Abstract]

Carrying Amounts of Financial Instruments

	As of March 31, 2019				As of December 31, 2018
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Cash and cash equivalents	$	189,875	$	189,875	$	219,408	$	219,408
Restricted cash		44,285		44,285		53,726		53,726
Notes receivable, net		435,629		556,000		439,167		537,000
Lines-of-credit, notes payable, and receivable-
backed notes payable		563,363		582,000		592,322		596,900
Junior subordinated debentures		71,504		86,500		71,323		87,000